body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: "Source Sans Pro", "Microsoft Yahei", sans-serif;
  font-size: 14px;
  position: relative;
}
* {
  box-sizing: border-box;
}
a{
  text-decoration: none;
}
p,ul,li,ol{
  margin: 0;
  padding: 0;
}
p{
  line-height: 30px;
}
.link-btn {
  position: absolute;
  top: 20px;
  right: 60px;
}
.courier-bg,
.mail-bg{
  width: 100%;
  height: 100%;
  background: #86D9FF url(../images/bj_courier.png) center center no-repeat;
  background-size: contain;
}
.mail-bg{
  background: #c3e5d4 url(../images/mail_bg.png) center center no-repeat;
  background-size: contain;
}
.link-item {
  margin: 10px;
  display: inline-block;
  font-size: 13px;
  position: relative;
  width: 11.25em;
  height: 4.375em;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
}
.item_one {
  background-image: url(../images/u_normal.png);
}
.item_one:hover {
  // background-image: url(../images/u_hover.png);
}
.item_one:active, .item_one.on {
  background-image: url(../images/user.png);
}
.item_one:active:after, .item_one.on:after {
  display: block;
  position: absolute;
  content: " ";
  left: 0;
  right: 0;
  top: 3.65em;
  height: 2em;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-image: url(../images/user_shadow.png);
}
.item_two {
  background-image: url(../images/c_normal.png);
}
.item_two:hover {
  // background-image: url(../images/c_hover.png);
}
.item_two:active, .item_two.on {
  background-image: url(../images/courier.png);
}
.item_two:active:after, .item_two.on:after {
  display: block;
  position: absolute;
  content: " ";
  left: 0;
  right: 0;
  top: 3.65em;
  height: 2em;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-image: url(../images/courier_shadow.png);
}

.item_mail {
  background-image: url(../images/mailLink_03.png);
}
.item_mail:hover {

}
.item_mail:active, .item_mail.on {
  background-image: url(../images/item_mail_on_03.png);
}
.item_mail:active:after, .item_mail.on:after {
  display: block;
  position: absolute;
  content: " ";
  left: 0;
  right: 0;
  top: 3.65em;
  height: 2em;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-image: url(../images/postman_shadow.png);
}
.item_help {
  background-image: url(../images/help_normal.png);
}
.item_help:hover {

}
.item_help:active, .item_help.on {
  background-image: url(../images/help.png);
}
.item_help:active:after, .item_help.on:after {
  display: block;
  position: absolute;
  content: " ";
  left: 0;
  right: 0;
  top: 3.65em;
  height: 2em;
  /*background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-image: url(../images/postman_shadow.png);*/
}
.courier-download {
  position: absolute;
  bottom: 20.5%;
  right: 20%;
}
.mail-download {
  bottom: 19.5%;
  right:23%;
}
.courier-download-item {
  margin: 10px;
  display: inline-block;
  font-size: 16px;
  position: relative;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
}
.courier-code {
  display: none;
  position: absolute;
  top: -120px;
  text-align: center;
  width: 100%
}
.code-left {
  left: -14px;
}
.courier-code img {
  width: 120px;
  border: 5px solid #fff;
}
.item-ios:hover .courier-code, .item-android:hover .courier-code {
  display: block;
}
.item-ios {
  width: 5.75em;
  height: 9.6875em;
  background-image: url(../images/ios_1.png);
}
.item-ios:hover {
  height: 10.875em;
  background-image: url(../images/ios_2.png);
}
.mail-ios {
  background-image: url(../images/mail_ios_01.png);
}
.mail-ios:hover {
  background-image: url(../images/mail_ios_02.png);
}

.item-android {
  width: 8.8125em;
  height: 9.6875em;
  background-image: url(../images/android_1.png);
}
.item-android:hover {
  height: 10.875em;
  background-image: url(../images/android_2.png);
}
.mail-android {
  background-image: url(../images/mail_android_01.png);
}
.mail-android:hover {
  background-image: url(../images/mail_android_02.png);
}
.mail-download>a{
  height: 10.875em;
}
.user-bg {
  width: 100%;
  height: 100%;
  background: url(../images/bg_user.png) center center no-repeat;
  background-size: cover;
}
.user-download {
  position: absolute;
  top: 35%;
  left: 23.5%;
  z-index: 998;
}
.user-item {
  margin: 10px;
  display: inline-block;
  font-size: 16px;
  width: 14.3125em;
  height: 4.5em;
  position: relative;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
}
.user-ios {
  background-image: url(../images/ios_normal.png);
}
.user-ios:hover {
  background-image: url(../images/ios_selected.png);
}
.user-android {
  background-image: url(../images/android_normal.png);
}
.user-android:hover {
  background-image: url(../images/android_selected.png);
}
.user-code {
  display: none;
  position: absolute;
  top: 80px;
  text-align: center;
}
.user-code img {
  width: 65%;
  -webkit-box-shadow: 0px 2px 20px #585757;
  -moz-box-shadow: 0px 2px 20px #585757;
  box-shadow: 0px 2px 20px #585757;
}
.user-ios:hover .user-code, .user-android:hover .user-code {
  display: block;
}
.tel-bg-courier {
  width: 100%;
  text-align: center;
  display: none;
  position: absolute;
  top: 30%;
}
.tel-bg-courier img {
  width: 100%
}
.tel-bg-user {
  width: 100%;
  text-align: center;
  display: none;
  position: absolute;
  bottom: 0;
}
.tel-bg-user img {
  width: 100%
}
.help-bg{
  /*width: 100%;
  height: 100%;*/
  background-size: contain;
  height: 400px;
  padding-top: 120px;
  background: url(../images/help_bg.png) center 120px no-repeat;
}
.section{
  padding: 50px 0;
}
.item-wrap{
  width: 100%;
  max-width: 900px;
  margin: auto;
}
.form-input{
  width: 100%;
  display: inline-table;
}
.input-inner{
  display: inline-block;
  width: 100%;
  height: 36px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: #fff;
  background-image: none;
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
  border: 1px solid #42A3D5;
  box-sizing: border-box;
  color: #1f2d3d;
  font-size: inherit;
  line-height: 1;
  outline: 0;
  padding: 3px 10px;
  transition: border-color .2s cubic-bezier(.645,.045,.355,1);
}
.icon-search{
  vertical-align: middle;
  display: table-cell;
  /*position: relative;*/
  border: 1px solid #42A3D5;
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
  padding: 0 25px;
  width: 1px;
  white-space: nowrap;
  background: #42A3D5;
  color: #fff;
}
.box{
  display: flex;
}
.item-box{
  flex: 1;
  max-width:48%;
  margin-bottom: 30px;
  padding: 15px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-left: 4px solid #42A3D5;
  border-radius: 4px;
  background: #fff;
}
.item-box.right{
  margin-left: 4%;
}
.item-box p{
  padding-left: 10px;
}
.item-box p a{
  color: #000;
}
.item-box .more{
  float: right;
}
.item-box .more a{
 color: #42A3D5;
}
.item-nav{
  display: inline-block;
  width: 20%;
  margin-top: 30px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-left: 4px solid #42A3D5;
  border-radius: 4px;
  background: #fff;
  vertical-align: top;
}
.item-nav p{
  cursor: pointer;
}
.item-nav p a{
  display: block;
  width: 100%;
  padding: 10px 15px;
  color: #000;
}
.item-nav p.selected{
  background: #F7F4F8;
}
.item-nav p.selected a{
  color: #42A3D5;
}
.item-container{
  display: inline-block;
  width: 70%;
  margin-left: 35px;
  margin-top: 30px;
  padding: 15px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  background: #fff;
}
.item-container p a{
  text-decoration: none;
  color: #000;
}
@media screen and (max-width:640px) {
  .link-btn {
    position: absolute;
    top: 20px;
    right: 0;
    width: 100%;
  }
  .link-item {
    margin: 10px;
    display: inline-block;
    font-size: 13px;
    position: relative;
    width: 40%;
    height: 5em;
    background-size: 100%;
    background-position: 0 0;
    background-repeat: no-repeat;
  }
  .item_two:active:after, .item_two.on:after {
    top: 80%;
  }
  .item_one:active:after, .item_one.on:after {
    top: 80%;
  }
  .courier-download {
    position: absolute;
    bottom: 5%;
    right: 0;
    width: 100%;
    text-align: center;
  }

  .courier-bg {
    background: #86D9FF;
  }
  .tel-bg-courier, .tel-bg-user {
    display: block;
  }
  .user-download {
    top: 28%;
    left: 0;
    width: 100%;
    text-align: center;
  }
  .user-bg {
    background: none;
  }
  .user-item {
    font-size: 10px;
  }
  .courier-download-item {
    font-size: 10px;
  }
  .user-ios:hover .user-code, .user-android:hover .user-code {
    display: none;
  }
  .item-ios:hover .courier-code, .item-android:hover .courier-code {
    display: none;
  }
}